BTS— the K-pop boy band that has broken records for their latest releases and remains one of the social media world’s most enduring stars — didn’t necessarily need to bring in a featured artist for their latest single, given their existing star power. But their decision to tap pop singer Halsey for theirlatest single, off their April projectMap of the Soul: Persona,turned out to be a smart move. It’s a combination that lends this retro-meets-hip-hop bop an extra layer of interest. Come for the sugar-sweet melody and sing-a-long chorus over airy beats, but stay for the music video and the group’s enviable choreography.